Results were expressed in mg gallic acid equivalent
The phenolic content of potato fries ranged from 542.4 to 714.7 mg gallic acid equivalent
per 100 grams of fries, regardless of the treatment used.
TPC was calculated as mg gallic acid equivalent
per 100 g (mg gallic acid/100 g).
GAE: gallic acid equivalent
; CE: catechin equivalent; TE: trolox; nd: not determined.
The antioxidant activity was expressed as gallic acid equivalent
The phenol contents were expressed in terms of milligrams of the gallic acid equivalent
(GAE) per gram of the extract (mg-GAE/g extract).
"Abbreviations: DPPH: 2-diphenyl-1-picryhydrazyl radical scavenging activity; GAE: gallic acid equivalent
. Table 2--pH, total acidity (TA) and color ([L.sup.*], [a.sup.*], [b.sup.*], Chroma and hue) in five pear jellies obtained by different cultivars.
Results Sample TP F T (mgGAE/g) (mgRE/g) (mgTAE/g) Sb-EtOH 624.6 [+ or -] 132.4 [+ or -] 255.8 [+ or -] 0.42 1.76 2.06 Ascorbic acid -- -- -- BHA -- -- -- BHT -- -- -- Antioxidant activity Sample DPPH [beta]-Carotene ([EC.sub.50]) (% AA) Sb-EtOH 1.46 [+ or -] 60.81 [+ or -] 0.07 0.67 Ascorbic acid 0.64 [+ or -] 7.50 [+ or -] 0.22 2.12 BHA 1.22 [+ or -] 97.49 [+ or -] 0.43 0.76 BHT 8.16 [+ or -] 99.10 [+ or -] 7.06 1.14 GAE: gallic acid equivalent
; RE: rutin equivalent; TAE: tannic acid equivalent.
The concentration of total phenolic compounds was determined as [micro]g of gallic acid equivalent
(GAE) per mg of extract using a standard curve which was prepared using gallic acid solutions (0 to 500 mg/ml) solubilized in MeOH/[H.sub.2]O (1: 9 v/v).
In the present study we employed black tea and fresh tea flush to remove polyphenols which have 10.8-12.5 and 20.3-25.6 w/w% gallic acid equivalent
Results were expressed as mg gallic acid equivalent
per g of dry weight (mg GAE/g DW).
The results for Total phenolic Assay were noted down by comparing them with the Gallic acid equivalent
and the resultant values were recorded in the form of ug/g of Gallic acid.